"Today Logan was doing very bad his breathing was very rapid then slowing down," Swidorsky posted on Facebook late Monday night. She called a hospice worker, who said the boy was dying.

"Sean and I held him all day he was comfortable with his medication then at 8:18 my son took his last breath in my arms," she wrote, noting sadness and disbelief.

"He is with angels and he's in no more pain. no more sickness no more hospitals. ... God bless Logan I'll c u in my dreams my son."

Logan was born with Fanconi anemia, a disease that mainly affects the bone marrow and decreases production of blood cells.

The Stevensons abandoned an original wedding date of July 2014 after learning from doctors late last month that their son had two to three weeks to live. His parents moved up the date of their wedding so Logan could take part in the ceremony. The couple wanted Logan to see them marry and to be part of family photos.

After a whirlwind week, the Jeannette couple tied the knot in a hastily arranged backyard ceremony that formalized their union and celebrated Logan's life. Logan stood in a tan, pintstriped suit and orange shirt with his grandmother, Debbie Stevenson, during a 12-minute ceremony.

Swidorsky's daughter, Isabella Johns, 13, served as bridesmaid and the couple's 1-year-old daughter, Savannah, was her parents' flower girl.

"We're married," Swidorsky exclaimed after kissing her groom to applause from family and friends. "This is our dream come true."